Definition for Microenvironment
From Biology Forums Dictionary
In Medicine: a small or relatively small usually distinctly specialized and effectively isolated habitat or environment (as of a nerve cell).
In Science: The environment of a very small, specific area, distinguished from its immediate surroundings by such factors as the amount of incident light, the degree of moisture, and the range of temperatures. The side of a tree that is shaded from sunlight is a microenvironment that typically supports a somewhat different community of organisms than is found on the side that receives regular light. Also called microhabitat.